Value Collection 63517 Hex Socket Cap Screw 1/4-20 Unc 50pk

Product Description

The VALUE COLLECTION 63517 is a hex socket cap screw designed for secure fastening in applications that demand corrosion resistance and consistent clamping force. The screw features a 1/4-20 UNC thread size with a 5/8 inch length under head and a 3/16 inch hex drive socket. Manufactured from 316 stainless steel, it offers superior resistance to chlorides and oxidizing environments compared to standard 304 grade material. Sold in a pack of 50, this fastener is suited for mechanical assembly, plumbing fixture mounting, HVAC equipment panels, and general industrial use where stainless hardware is specified.

This screw is a standard choice for trade professionals and contractors working in corrosive or wet environments such as coastal installations, pool equipment enclosures, chemical processing areas, and marine applications. The 1/4-20 UNC coarse thread pattern provides reliable engagement in through-holes and tapped bores across a wide range of base materials. The socket cap head allows for installation in tight or recessed spaces where a hex key is the preferred driving tool.

Key Features

• 316 stainless steel construction provides high corrosion resistance in wet and chloride-exposed environments
• 1/4-20 UNC coarse thread for broad compatibility with standard tapped holes and nuts
• 3/16 inch hex socket drive allows use in recessed or confined installation areas
• 5/8 inch length under head suits moderate-depth fastening applications
• Pack of 50 reduces per-unit cost for recurring service and installation work

Compatibility

Designed as a standard 1/4-20 UNC hex socket cap screw for use in any application requiring a 5/8 inch length under head fastener with a 3/16 inch hex drive and 316 stainless steel material grade.

Installation Notes

Install using a 3/16 inch hex key or Allen driver; an L-key, T-handle, or socket driver with the correct hex bit is recommended for consistent torque application. Ensure the mating tapped hole or nut is clean and free of debris before threading to avoid galling, which is a known risk with stainless steel fasteners. Apply an anti-seize compound to the threads when working in high-moisture or dissimilar-metal assemblies to prevent seizing over time. Follow applicable mechanical codes and equipment manufacturer torque specifications for the assembly being serviced.